A flaw was found in libinput. An attacker capable of deploying a Lua plugin file in specific system directories can exploit a dangling pointer vulnerability. This occurs when a garbage collection cleanup function is called, leaving a pointer that can then be printed to system logs.
This could potentially expose sensitive data if the memory location is re-used, leading to information disclosure. For this exploit to work, Lua plugins must be enabled in libinput and loaded by the compositor.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Freedesktop Libinput
cpe:2.3:a:freedesktop:libinput:-:*:*:*:*:*:*:*
|
— | — |
|
Fedoraproject Fedora
cpe:2.3:o:fedoraproject:fedora:43:*:*:*:*:*:*:*
|
— | — |
|
Fedoraproject Fedora
cpe:2.3:o:fedoraproject:fedora:44:*:*:*:*:*:*:*
|
— | — |